Characterizing phosphorus forms in Saskatchewan soils using solution 31P NMR spectroscopy

Non-Peer ReviewedIn soils and other environmental samples, phosphorus (P) may be found in a range of inorganic and organic forms. Inorganic P forms include orthophosphate, which is readily available to plants, and complex inorganic P forms such as pyrophosphate and polyphosphate. Organic P forms can be divided into groups such as orthophosphate monoesters (e.g. sugar phosphates, phytic acid) and orthophosphate diesters (e.g. phospholipids, DNA) and phosphonates. Identifying P forms is important to enhance crop growth, with and without fertilization, and to minimize P loss to water, where it can cause harmful algal blooms. This presentation describes some of our recent research using solution 31P NMR spectroscopy to characterize P forms in a range of Saskatchewan soils, as well as swine manure

Effect of freeze-thaw cycles and soil water content on infiltration rate of Saskatchewan soils

Non-Peer Reviewe

Phosphorus export as influenced by placement method in two contrasting sites in south-central Saskatchewan

Non-Peer Reviewe

Phosphorus forms and concentrations in soils under different land use in southwestern Saskatchewan

Non-Peer ReviewedPhosphorus (P) is an essential nutrient for all organisms. Insufficient or poorly available P can limit crop growth, requiring P fertilization. However, excess P can move from land to water, impairing water quality. Balancing P fertilization to maximize crop growth while limiting P loss requires a detailed knowledge of P forms and cycling. Different land use practices are expected to alter P cycling through differences in microbial populations, P inputs from vegetation and fertilizer, and management practices that affect soil chemical and physical properties. Understanding P cycling under different land uses can help to improve P use efficiency in agriculture. Presented here are the preliminary results of a research project investigating P forms and cycling in soils under different land uses in southwestern Saskatchewan

Forecasting the quality of AMF communities

Non-Peer Reviewe

Long-term response of spring wheat to N and P fertilization in southwestern Saskatchewan

Non-Peer Reviewe